This theses studies how information and its timing affect strategic behavior. The thesis consists of three separate essays. Each analyzes a situation where information arrives endogenously over time as a consequence of actions taken. In the first essay, a monopolistic seller launches a new product to a market. The true value of the product is unknown to both the monopolist and the consumers. It can be learned as consumers try out the product. The consumers impose an informational externality on each other as late buyers benefit from the information produced by early buyers. Consumers have an incentive to postpone purchasing decision and free-ride on the experimentation of other consumers. The monopolist can affect consumers' incentives ...